27（2/3）减log2 8等于

27（2/3）减log2 8等于 log2 3乘以log2 3等于2log2 log2 3/log2 5等于log2 3-log2 5么? (log2 9)/(log2 8) = 2/3(log2 3) 2的log2（3）次方等于3,那2的-log2（3）等于多少啊? 27^2/3-2^log2^3xlog2^1/8+lg^4+2lg^5等于 (-27/8)^3+(2-根号三)^0-1/9*log2^9*log3^4等于多少 2^[log2(3)]为什么等于3. 2∧log2 1/3等于多少 log2 3等于多少? log4 27/log2 3等于多少 log4 27/log2 3等于多少要过程 2^log2 (3) × log2 (1/8) + 2lg3